Unitronics UMI-B1 UL Series Operation Manual page 108

UMI-B1 UL Series Inverter
Fault
Fault type
code
EEP EEPROM fault
PIDE PID feedback fault
bCE Braking unit fault
Velocity deviation
dEu
Maladjustment
STo
Time reach of
END
factory setting
Possible cause
2. The rated parameter of
the motor does not set
correctly.
3. The offset between the
parameters from
autotune and the
standard parameter is
huge
4. Autotune overtime
1. Error of controlling the
write and read of the
parameters
2. Damage to EEPROM
1. PID feedback offline
2. PID feedback source
disappear
1. Braking circuit fault or
damage to the braking
pipes
2. The external braking
resistor is not sufficient
The load is too heavy or
fault stalled.
1. The control parameters
of the synchronous
motors not set properly.
2. The autoturn
fault
parameter is not right.
3. The inverter is not
connected to the motor.
The actual running time
of the inverter is above
the internal setting
running time.
106
Fault tracking
Solutions
parameter according to
the motor name plate
3. Empty the motor load.
4. Check the motor
connection and set the
parameter.
5. Check if the upper limit
frequency is above 2/3 of
the rated frequency.
1. Press STOP/RST to
reset
2. Change the main
control panel
1. Check the PID
feedback signal
2. Check the PID
feedback source
1. Check the braking unit
and , change new braking
pipe
2. Increase the braking
resistor
1. Check the load and
ensure it is normal.
Increase the detection
time.
2. Check whether the
control parameters are
normal.
1. Check the load and
ensure it is normal.
2. Check whether the
control parameter is set
properly or not.
3. Increase the
maladjustment detection
time.
Ask for the supplier and
adjust the setting running
time.